What does it mean when someone tells you that green light is being absorbed?

When light is absorbed, it gets converted into energy. Light will absorb green, but appear as red since those two forms have now combined. Take the process of photosynthesis for example, light is absorbed if the plants are complementary. If they are not, the process cannot occur. When something is complementary that means it can be combined. Another example would be how green light in chlorophyll isn't absorbed, it is reflected to show its color.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

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